EP0111136A2 - Additif pour solution de mouillage pour l'impression lithographique - Google Patents

Additif pour solution de mouillage pour l'impression lithographique Download PDF

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Publication number
EP0111136A2
EP0111136A2 EP83110755A EP83110755A EP0111136A2 EP 0111136 A2 EP0111136 A2 EP 0111136A2 EP 83110755 A EP83110755 A EP 83110755A EP 83110755 A EP83110755 A EP 83110755A EP 0111136 A2 EP0111136 A2 EP 0111136A2
Authority
EP
European Patent Office
Prior art keywords
fountain solution
solution additive
diol
dimethyl
wetting agents
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP83110755A
Other languages
German (de)
English (en)
Other versions
EP0111136B1 (fr
EP0111136A3 (en
Inventor
Norbert Steinhöfel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bernd Schwegmann & Co KG GmbH
Original Assignee
Bernd Schwegmann & Co KG GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6180572&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0111136(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Bernd Schwegmann & Co KG GmbH filed Critical Bernd Schwegmann & Co KG GmbH
Priority to AT83110755T priority Critical patent/ATE44499T1/de
Publication of EP0111136A2 publication Critical patent/EP0111136A2/fr
Publication of EP0111136A3 publication Critical patent/EP0111136A3/de
Application granted granted Critical
Publication of EP0111136B1 publication Critical patent/EP0111136B1/fr
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N3/00—Preparing for use and conserving printing surfaces
    • B41N3/08—Damping; Neutralising or similar differentiation treatments for lithographic printing formes; Gumming or finishing solutions, fountain solutions, correction or deletion fluids, or on-press development

Definitions

  • the present invention relates to a fountain solution additive for offset printing, which contains wetting agents, pH-regulating substances, humectants, optionally film formers, softening agents, preservatives and solvents.
  • the present invention has set itself the task of providing an improved fountain solution additive for offset printing, which leads to lower water flow and the resulting printing advantages, ensures a quick adjustment of the emulsification conditions, facilitates the washability of the dampening rollers, enables a fast free running of the printing plate and thereby leads to a reduction in waste, the ink deposits on the rubber blanket in the non-image area and does not foam. Furthermore, the invention has for its object to develop a fountain solution that contains no water or only a small amount of water, so that it can be made in paste, powder or tablet form.
  • wetting agents can additionally contain certain amounts of other customary wetting agents, in particular those which are also available in solid form or can be converted into solid form.
  • a solid acidic buffer is used as the pH-regulating substance.
  • a mixture of trisodium citrate and citric acid has proven particularly useful.
  • polyalcohols having 5 or 6 carbon atoms are used as humectants.
  • Hexite has proven particularly useful.
  • the fountain solution additive according to the invention preferably contains ethylenediaminetetraacetic acid as the sodium salt as softening agent. Potassium sorbate has proven particularly useful as a preservative.
  • a liquid fountain solution concentrate can contain 0.1 to 50 parts of group A wetting agent. The concentration depends solely on the solvent. Not all Group A wetting agents are clearly soluble in higher concentrations in pure water, while solvents such as ethanol or isopropanol are able to clearly dissolve the Group A wetting agents in a ratio of 1: 1. A solvent mixture of ethanol or isopropanol to water in a ratio of 30:70 is able to clearly dissolve sufficient amounts of group A wetting agent.
  • the group A wetting agents in pure form are water-soluble in a sufficient concentration in ready-to-use fountain solution, even without the addition of alcohols.
  • a liquid concentrate can contain between 0.01 and 2 parts of group A wetting agent, 10-90 parts of water and, if desired, 0 to 30 parts of alcohol being used as the solvent.
  • a fountain solution additive according to the invention in powder form can contain 0.05-5 parts of group A wetting agent in addition to 2-90 parts of buffer salt, 0-60 parts of softening agent, 0-80 parts of humectant, 0-80 parts of film former and 0.2-5 parts Preservative.
  • group A wetting agent in addition to 2-90 parts of buffer salt, 0-60 parts of softening agent, 0-80 parts of humectant, 0-80 parts of film former and 0.2-5 parts Preservative.
  • Such a powder can easily be compressed into tablets. These tablets dissolve quickly and easily in water and thus allow easy and simple dosing and preparation of the fountain solution for ⁇ offset printing. However, this powder can also be dissolved directly in water without difficulty or offered in the form of a paste with only a low water content will.
  • the advantage of the powder and tablet form, but also the paste form is the small storage volume, the smaller packaging, the reduction in freight costs and the stability.
  • a content of 0.001-0.1 g of wetting agent per liter of fountain solution leads to the advantages of the fountain solution compared to conventional formulations which can be achieved according to the invention, namely the improvement of the color, water and emulsification behavior, the enabling of extremely low water flow and the resulting printing advantages.
  • the dampening rollers can be cleaned faster and more thoroughly, and the re-contamination of the dampening rollers covered is reduced.
  • the printing plates run free extremely quickly, thereby reducing the amount of waste.
  • color deposits on the blanket in the non-image area are also significantly reduced.
  • group A wetting agent preferably 0.5 to 2 parts, with 2 to 90 parts of buffer salt (trisodium citrate / citric acid in a ratio of 5: 1 to 2: 1), 0.2 to 5 parts, preferably 1 to 3 parts of potassium sorbate, 0 to 80 parts, preferably 20 to 40 parts of sorbitol as a humectant, 0 to 60 parts, preferably 2 to 20 parts of sodium ethylenediaminetetraacetic acid as a softening agent and 0 to 80 parts, preferably 0 to 5 parts of gum arabic as a film former in a powder mixer mixed until homogeneous.
  • the powder can be instantized or compressed into tablets.
  • the powder is added in amounts of 1 to 10 g, preferably 3 to 5 g, per liter of fountain solution.

Landscapes

  • Printing Plates And Materials Therefor (AREA)
EP83110755A 1982-12-14 1983-10-27 Additif pour solution de mouillage pour l'impression lithographique Expired EP0111136B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83110755T ATE44499T1 (de) 1982-12-14 1983-10-27 Feuchtwasser-zusatz fuer den offsetdruck.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3246153 1982-12-14
DE3246153 1982-12-14

Publications (3)

Publication Number Publication Date
EP0111136A2 true EP0111136A2 (fr) 1984-06-20
EP0111136A3 EP0111136A3 (en) 1986-08-27
EP0111136B1 EP0111136B1 (fr) 1989-07-12

Family

ID=6180572

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83110755A Expired EP0111136B1 (fr) 1982-12-14 1983-10-27 Additif pour solution de mouillage pour l'impression lithographique

Country Status (3)

Country Link
EP (1) EP0111136B1 (fr)
AT (1) ATE44499T1 (fr)
DE (1) DE3380173D1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0269760A1 (fr) * 1986-12-02 1988-06-08 Bernd Schwegmann GmbH & Co. KG Solution de mouillage pour l'impression lithographique
EP0411883A1 (fr) * 1989-08-02 1991-02-06 Fuji Photo Film Co., Ltd. Solution de mouillage pour l'impression offset
US5288678A (en) * 1990-10-19 1994-02-22 Beckman Instruments, Inc. Indirect potentiometric method and diluent for analysis of lithium
US5340495A (en) * 1993-04-30 1994-08-23 Siebert, Inc. Compositions for cleaning ink from a printing press and methods thereof
US6660454B2 (en) 2001-05-18 2003-12-09 Kodak Polychrome Graphics Llc Additive composition for both rinse water recycling in water recycling systems and simultaneous surface treatment of lithographic printing plates
DE102008061735A1 (de) * 2008-12-11 2010-06-17 Weros Technology Gmbh Druckverfahren, insbesondere Offset-Druckverfahren, und Trennmittel für dieses

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1807647A1 (de) 1967-11-16 1969-06-12 Eastman Kodak Co Verfahren zur Verbesserung der Druckeigenschaften von Flachdruckformen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4246843A (en) * 1976-07-23 1981-01-27 The Dow Chemical Company Method for treating imaged lithographic printing plates

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1807647A1 (de) 1967-11-16 1969-06-12 Eastman Kodak Co Verfahren zur Verbesserung der Druckeigenschaften von Flachdruckformen

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0269760A1 (fr) * 1986-12-02 1988-06-08 Bernd Schwegmann GmbH & Co. KG Solution de mouillage pour l'impression lithographique
EP0411883A1 (fr) * 1989-08-02 1991-02-06 Fuji Photo Film Co., Ltd. Solution de mouillage pour l'impression offset
US5288678A (en) * 1990-10-19 1994-02-22 Beckman Instruments, Inc. Indirect potentiometric method and diluent for analysis of lithium
US5340495A (en) * 1993-04-30 1994-08-23 Siebert, Inc. Compositions for cleaning ink from a printing press and methods thereof
US6660454B2 (en) 2001-05-18 2003-12-09 Kodak Polychrome Graphics Llc Additive composition for both rinse water recycling in water recycling systems and simultaneous surface treatment of lithographic printing plates
DE102008061735A1 (de) * 2008-12-11 2010-06-17 Weros Technology Gmbh Druckverfahren, insbesondere Offset-Druckverfahren, und Trennmittel für dieses

Also Published As

Publication number Publication date
DE3380173D1 (en) 1989-08-17
EP0111136B1 (fr) 1989-07-12
EP0111136A3 (en) 1986-08-27
ATE44499T1 (de) 1989-07-15

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